A client is building a home-theater PC that must fit inside a very small living-room media-console enclosure. Which motherboard form factor would best satisfy the space requirement while still supporting standard consumer components such as desktop CPUs, DIMMs, and a single expansion card?
Mini-ITX measures only 170 × 170 mm (6.7 × 6.7 inches), making it the smallest widely adopted consumer motherboard form factor. It is specifically intended for compact builds like home-theater PCs and small-form-factor desktops, yet still accepts standard desktop processors, DIMMs, and one PCIe card. Micro-ATX, ATX, and Extended ATX (EATX) are progressively larger (244 × 244 mm, 305 × 244 mm, and 305 × 330 mm respectively) and would not fit in many HTPC enclosures designed for Mini-ITX boards.
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